G - Physics – 01 – N
Patent
G - Physics
01
N
324/55
G01N 27/72 (2006.01) B03B 5/44 (2006.01) B03B 13/00 (2006.01) G01N 15/04 (2006.01) G01R 33/12 (2006.01)
Patent
CA 1160294
TESTING METHOD FOR DETERMINING THE MAGNETIC PROPERTIES OF FERROMAGNETIC POWDWERS ABSTRACT OF THE DISCLOSURE: The invention relates to a method permitting ferromagnetic powders to be readily tested for their qualification for use in heavy medium suspensions for the float-sink dressing of minerals. To this end, the invention provides a) for ferromagnetic powder particles with a size within the range 63 to 100 /u to be admixed with a quantity of a glycerol/watermixture necessary to obtain a heavy medium suspension having a specific density within the range 1.45 to 1.55 g/cm3; b) for the heavy medium suspension to be demagnetized in a cyclicly decreasing alternating field at maximum field strengths within the range 1200 to 1600 amperes/cm and for its relative sedimentation velocity to be determined by means of a sedimento- meter; c) for the demagnetized heavy medium suspension to be magnetized in a magnetic steady field at field strengths within the range 700 to 900 amperes/cm and for its relative sedimentation velocity to be determined by means of a sedimentometer; and for d) the magnetized heavy medium suspension to be demagnetized in a cyclicly decreasing alternating field at maximum field strengths within the range 1200 to 1600 amperes/cm and for its relative sedimentation velocity to be determined by means of a sedimento- meter. Ferromagnetic powder is fully serviceable for use in heavy medium suspensions in the event of the relative sedimentation velocity determined in step b) being smaller than 0.25 cm/second, that determined in step c) being greater than 2.5 cm per second and that determined in step d) being smaller than 0.4 cm/second.
376940
Kramer Horst
Uhle Karlheinz
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
LandOfFree
Testing method for determining the magnetic properties of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Testing method for determining the magnetic properties of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing method for determining the magnetic properties of... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1031729